How to Create a Bootable Windows 10/11 USB using PowerShell (and DiskPart).

You’ll Need:

                       A Windows 10/11 ISO (official from Microsoft)

                       A USB drive (at least 8GB)

                       Administrator privileges

Step 1: Identify Your USB Drive

A. Open PowerShell as Administrator

    Right-click Start → Windows PowerShell (Admin)

    Win-key plus x keyboard button

B. Start DiskPart

    diskpart

C. List all disks

    list disk

    Find your USB (look at size). For example, if your USB is Disk 1

D. Select the USB disk

     select disk 1

E. Clean the USB (⚠️ Destroys all data on it)

    clean

F. Create and format partition

     create partition primary

     select partition 1

     format fs=ntfs quick

     active

     assign

     exit

Step 2: Mount the ISO

Double-click your Windows ISO (or right-click → Mount)

This will create a virtual DVD drive (e.g., D:)

Step 3: Copy the ISO Files to USB

              In PowerShell (still as admin):

                xcopy D:\* E:\ /E /F /H

                 D: → Your mounted ISO drive

                 E: → Your USB drive (adjust accordingly)

Now your USB is bootable, clean, and fully under your control — no hidden tricks, no extra installers.

🔒 (Optional but Recommended) — Verify ISO SHA256

If you want to be 100% sure your ISO wasn’t tampered with:

Get-FileHash C:\Path\To\Win10.iso -Algorithm SHA256

Then compare it with the checksum from Microsoft: → Official SHA256 hashes